As LNs claim that the documents for the rifle purchase provide conclusive proof that Oswald ordered, purchased and received the rifle from Kleins', let's examine that claim a little closer.
The only documents that tentatively link Oswald to the Kleins' rifle order are a photocopy of a filled out order form, in name of A. Hidell, a photocopy of an envelope and a photocopy of a money order that may or may not be linked to that particular order form. It should be noted that the only thing really linking any of these photocopies, taken from a microfilm which has since been lost, to Oswald is the opinion of FBI questioned documents experts, like Lyndal Shaneyfelt, who during Bugs' mock trial agreed with Gerry Spence that photocopies can easily be tampered with.
So, what exactly do LNs believe do these three documents conclusively prove?